Migrate compliance-portal to the global ESLint config

The compliance-portal app still carried the per-workspace ESLint
scaffold that the rest of the monorepo dropped when linting was
centralized into the root eslint.config.mjs. It defined its own
local config, lint script, and lint-only devDeps, and was not
covered by the root lint script, so it was never linted.

Remove the local eslint.config.mjs, the lint script, and the
eslint/@probo/eslint-config devDeps, then add the app to the root
appDirs so the shared ts, react, and relay rule sets apply to it.

Replace the explicit per-directory list in the root lint script
with a bare `eslint .`, which the root config was already designed
for via its globalIgnores. Ignore pkg/** so the vendored minified
JS under the Go tree is not linted.

Signed-off-by: Émile Ré <emile@probo.com>

apps/compliance-portal/package.json

@@ -6,7 +6,6 @@
   "scripts": {
     "dev": "vite --port 5175",
     "build": "tsc -b && vite build",
-    "lint": "eslint . --concurrency 2",
     "check": "tsc --noEmit -p tsconfig.app.json",
     "preview": "vite preview"
   },
@@ -20,7 +19,6 @@
     "relay-runtime": "^21.0.1"
   },
   "devDependencies": {
-    "@probo/eslint-config": "1.0.0",
     "@probo/eslint-plugin-relay-types": "^1.0.0",
     "@tailwindcss/vite": "^4.3.1",
     "@types/node": "^25.9.3",
@@ -30,7 +28,6 @@
     "@types/relay-runtime": "^20.1.1",
     "@vitejs/plugin-react": "^6.0.2",
     "babel-plugin-relay": "^21.0.1",
-    "eslint": "^10.5.0",
     "graphql": "^17.0.1",
     "tailwindcss": "^4.3.1",
     "typescript": "~6.0.3",